Analysis and Design of Bi-Directional DC-DC Converter in the Extended Run Time DC UPS System Based on Fuel Cell and Supercapacitor

Zhe Zhang, Ole Cornelius Thomsen, Michael A. E. Andersen, Jacob D. Schmidt, Henning R. Nielsen

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Abstract

Abstract-In this paper, an extended run time DC UPS system structure with fuel cell and supercapacitor is investigated. A wide input range bi-directional dc-dc converter is described along with the phase-shift modulation scheme and phase-shift with duty cycle control, in different modes. The delivered power and peak current are analyzed and calculated. The key parameters of the bi-directional dc-dc converter, the relationships between the input voltage, phase-shift angle, ratio of the transformer and leakage inductance are analyzed and optimized. Build the system mathematic model and a novel input voltage combined with load current feedback using PI controller with anti-windup scheme to realize closed-loop control of the whole system, and verify the feasibility of the control scheme proposed by simulation. A 1kW prototype controlled by TMS320F2808 DSP is implemented and tested. Experimental results show the validity of design.
Original languageEnglish
Title of host publicationTwenty-Fourth Annual IEEE Applied Power Electronics Conference and Exposition, 2009. APEC 2009
PublisherIEEE
Publication date2009
Pages714-719
ISBN (Print)978-1-4244-2812-0
DOIs
Publication statusPublished - 2009
Event24th Annual IEEE Applied Power Electronics Conference and Exposition - Washington DC, WA, United States
Duration: 15 Feb 200919 Feb 2009
Conference number: 24
http://www.apec-conf.org/2009/

Conference

Conference24th Annual IEEE Applied Power Electronics Conference and Exposition
Number24
CountryUnited States
CityWashington DC, WA
Period15/02/200919/02/2009
Internet address

Bibliographical note

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